what grows under the eaves?

I'm still experimenting with what will grow on the south side of my house under the eaves.  This is a side garden that only the neighbours really see so I only want plants that can pretty much take care of themselves.

After 2 weeks of almost constant rain, you can see it's still dry under the eaves.  Few plants will grow here.  There's an echinops (globe thistle) growing on the far side, and amazingly, some large-flowered hybrid clematis on the trellis are doing OK.  I do give them a little extra water from the rain barrels when I remember.  I've also grown sunflowers here successfully.

Large bearded iris and hollyhocks in the past haven't made it.  This year I stuck in a transplant of some blue centaurea (perennial bachelor's button) on the right just to fill the space.  But something with a little more contrast against the house would be nicer...  Might have to go back to sunflowers next year.